the other is 26-year-old tamerlan tsarnaev. they had a backpack believed to be carrying the explosives from the boston marathon. the older brother, seen there, is dead. the man seen wearing the white hat, identified as dzhokhar tsarnaev, he is still on the run. they came here to the united states in 2002, 2003 with their families. >> they could have heavily armed and strapped with bombs. >>> let's check in with meteorologist, christina loren. >> a lot of people trying to get to work and get out of town. i want to point out, we don't have any flight delays out of san francisco. you will find some heading into the northeast for today. we have a potent weather system headed that way. delays above one hour. keep that in mind. a pretty good-looking day. your hour by hour detail, 40s and 50s to start. temperatures climbing in the 60s and 70s. we will round out the day warm. 70, san francisco. 83 today in fairfield. as we head through the next seven days, temperatures stay nice and warm. above average all the way through the extended